Swift5 引导页

Swift5.x版本，ABI(应用程序二进制接口)终于稳定，也是时候从OC转Swift了

熟悉的OC框架，有的可以桥接继续使用，如AFNetworking、MJRefresh、YYKit等；也有对Swift不友好的，如KSGuaidView

分析原因是Swift不支持宏定义，而KSGuaidView中使用宏定义单例manager

#ifndef KSGuaidManager
#define KSGuaidManager [KSGuaidViewManager manager]

@implementation KSGuaidViewManager

static KSGuaidViewManager* _manager = nil;
static dispatch_once_t _onceToken;

+ (instancetype)manager{
    dispatch_once(&_onceToken, ^{
        _manager = [[super allocWithZone:NULL] init];
    });
    return _manager;
}
...

所以仿照KSGuaidView思路写了一个Swift版的WelcomePage，方便转Swift的童鞋使用。同样可以实现两种展示方式

WelcomePage1.gif

WelcomePage2.gif

主要侵入代码：

var window: UIWindow?
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.
        loadWelcomePage()
        return true
    }
    
    private func loadWelcomePage() {
        //显示要欢迎的图片数组
        GuideManager.share.images = [UIImage(named: "start_page1")!, UIImage(named: "start_page2")!, UIImage(named: "start_page3")!]
        //显示“点击体验”按钮，不赋值就是滚动进入应用
        GuideManager.share.enterImage = UIImage(named: "start_enter")
        //默认是展示UIPageControl控件，不需要展示打开下行注释即可
        //GuideManager.share.isShowPageControl = false
        GuideManager.share.checkVersion()
    }

主要代码：

    func showGuideView(_ currentVersion: String) {
        guideWindow = UIWindow(frame: CGRect(x: 0, y: 0, width: UIScreen.main.bounds.size.width, height: UIScreen.main.bounds.size.height))
        guideWindow?.windowLevel = .statusBar
        
        let rootVC = GuideViewController()
        rootVC.images = images
        rootVC.enterImage = enterImage
        rootVC.isShowPageControl = isShowPageControl
        rootVC.dismissClosure = { [weak self] in
            try? currentVersion.write(toFile: VersionPath, atomically: true, encoding: .utf8)
            self?.dismissGuideView()
        }
        guideWindow?.rootViewController = rootVC
        guideWindow?.makeKeyAndVisible()
    }

将WelcomePage文件夹拖入项目，AppDelegate.swfit中配置即可

• 特别说明：
  需要删除SceneDelegate.swift及相关配置代码才能正常显示欢迎页。

完整Demo